22 February 2017

Astronomers have discovered seven roughly Earth-size planets very close to a cool dwarf star some 39 light-years from Earth, including three orbiting in the star’s habitable zone where liquid water, a key ingredient for life as it’s known on Earth, could be present, researchers announced Wednesday.

The record-setting star system is the first to feature three Earth analogues in the so-called “Goldilocks” zone of their parent star and the first to include seven such worlds overall. The discovery was announced Wednesday in the journal Nature.

The intriguing star system was first studied by Belgium’s Transiting Planets and Planetesimals Small Telescope, or TRAPPIST, observatory in Chile where observations in 2016 indicated the presence of two and possibly three planets.

NASA’s infrared-sensitive Spitzer Space Telescope, working with the European Southern Observatory’s Very Large Telescope, then spent 500 hours studying the star, confirming the existence of two planets and discovering five more, boosting the total to seven.

“Not one, not two, but seven Earth-size planets,” marveled Michael Gillon, an astronomer at the University of Liege in Belgium who led the study. “This is is the first time that so many Earth-size planets were found around the same star. Furthermore, with three of them in the habitable zone.

“The star itself is what is called an ultra-cool dwarf, which is the least massive kind of star that exists,” he told reporters. “These stars are much smaller, much cooler than our sun and still, they are very frequent at the scale of our galaxy, more frequent than solar-type stars.”

For comparison, he said, if Earth’s sun was the size of a basketball, TRAPPIST-1 would be roughly equivalent to a golf ball.

Some 229 trillion miles from Earth in the constellation Aquarius, the TRAPPIST-1 star is “so cool that liquid water could survive on planets orbiting very close to it, closer than is possible on planets in our solar system,” NASA said in a statement. “All seven of the TRAPPIST-1 planetary orbits are closer to their host star than Mercury is to our sun.”

The innermost habitable zone planet is roughly the size of Earth and receives about the same amount of light, possibly resulting in surface temperatures very similar to our planet’s. The middle planet in the habitable zone receives about the same amount of light that Mars does, orbiting TRAPPIST-1 every nine days. The outermost planet receives the level of sunlight one would experience somewhere between Mars and the asteroid belt.

The planets may be “tidally locked” to their star, gravitationally held in place so only one side of the worlds face their sun. If so, the planets could host truly alien weather patterns, with strong winds and extreme changes in temperature.

The planets also are very close together. Researchers said an observer standing on one world likely could discern clouds and other features on neighboring worlds, which could appear larger in the sky than Earth’s moon.

But it is not yet known whether any of the planets host an atmosphere or liquid water and additional observations are planned, along with expanded studies to look for planets around other dwarf stars.

Spitzer detected the planets indirectly by studying how light from TRAPPIST-1 periodically dimmed as the worlds repeatedly passed in front of the star.

Using that data and others, astronomers were able to measure the sizes of the planets, allowing them to roughly calculate their masses, densities and orbital periods. It appears they likely are rocky planets, but additional observations are needed to determine if any have detectable atmospheres or liquid water.

“We’ve made a giant, accelerated leap forward in a search for habitable worlds and life on other worlds, potentially speaking,” said Sara Seager, professor of planetary science and physics at Massachusetts Institute of Technology. “With this amazing system, we know there must be many more potentially life-bearing worlds out there just waiting to be found.”

Additional observations are planned by Spitzer and the Hubble Space Telescope, which will focus on four of the seven planets, including the three now known to orbit within the habitable zone of TRAPPIST-1. Hubble observed the two innermost planets earlier, but found no evidence of the sort of hydrogen-dominated atmospheres that define worlds like Jupiter, Saturn, Uranus and Neptune in Earth’s solar system.

NASA’s Kepler space telescope, which was built to look for transiting exoplanets, also is studying the TRAPPIST-1 system, collecting high-precision data that will help researchers refine their knowledge of the worlds discovered so far while being on the lookout for additional planets.

And NASA’s James Webb Space Telescope, the $8.6 billion follow-on to Hubble that is scheduled for launch in 2018, also will study the TRAPPIST-1 system, spectroscopically studying atmospheric constituents and looking for telltale signs of biological indicators such as oxygen, methane and other chemicals.

Retired NASA astronaut Scott Kelley, who set a U.S. endurance record with a nearly year-long stay in space, greeted the discovery with enthusiasm. “This is awesome! Send me!” he tweeted. And he offered some idea of just how far away the TRAPPIST-1 system is — a distance of almost 40 light-years — when he added, “Be there in 800,000 years w our current propulsion technology. More work to do. Let’s get on it!”

Parrhesia

The two all-time most popular posts of Transudationism

A modern-day classic

All life is a form of light, and the cosmos is a holonic Holy Hologram.

Immanence ≋ Transcendence

Transudationism: mankinds' cosmic ideology.

SIC ITUR AD ASTRA!

Ascensional Transudation

Cosmic Evolution

All history is the history of the evolutionary transubstantiation of matter to Spirit via biological-life processes of Blood and Reason.

Alexandr Solzhenitsyn's concluding thoughts from his 1978 Harvard address, A World Split Apart

Alexandr Solzhenitsyn's concluding thoughts from his famous 1978 Harvard address,"A World Split Apart":

It would be retrogression to attach oneself today to the ossified formulas of the Enlightenment. Social dogmatism leaves us completely helpless in front of the trials of our times.

Even if we are spared destruction by war, our lives will have to change if we want to save life from self-destruction. We cannot avoid revising the fundamental definitions of human life and human society. Is it true that man is above everything? Is there no Superior Spirit above him? Is it right that man's life and society's activities have to be determined by material expansion in the first place? Is it permissible to promote such expansion to the detriment of our spiritual integrity?

If the world has not come to its end, it has approached a major turn in history, equal in importance to the turn from the Middle Ages to the Renaissance. It will exact from us a spiritual upsurge, we shall have to rise to a new height of vision, to a new level of life where our physical nature will not be cursed as in the Middle Ages, but, even more importantly, our spiritual being will not be trampled upon as in the Modern era.

This ascension will be similar to climbing onto the next anthropologic stage. No one on earth has any other way left but - upward.

In recent times it has been fashionable to talk of the levelling of nations, of the disappearance of different races in the melting-pot of contemporary civilization. I do not agree with this opinion, but its discussion remains another question. Here it is merely fitting to say that the disappearance of nations would have impoverished us no less than if all men had become alike, with one personality and one face. Nations are the wealth of mankind, its collective personalities; the very least of them wears its own special colours and bears within itself a special facet of divine intention.

Dr. Paul Craig Roberts

Neoconservatives used 9/11 to launch their plan for US world hegemony. Their plan fit with the interests of America’s ruling oligarchies. Wars are good for the profits of the military/security complex, about which President Eisenhower warned us in vain a half century ago. American hegemony is good for the oil industry’s control over resources and resource flows. The transformation of the Middle East into a vast American puppet state serves well the Israel Lobby’s Zionist aspirations for Israeli territorial expansion.

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"The seed of the universe is the big bang, says Kyle McDermott in 'The Declaration of White Independence: The Founding Documents of Transudationism'. An explanation of this view which holds that all of current humanity and life on Earth today was intentionally set in motion all those billions of years ago, 'The Declaration of White Independence' probes matters of cosmological significance with straightforward candor and accessibility. Featuring intriguing concepts and ideas, 'The Declaration of White Independence' is highly recommended for metaphysical studies shelves."

The Music of Life: Biology Beyond Genes

and speaking of cosmic symphonies, Julianne Hough

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